The "XF" tail numbers are a subtle nod to their Frontier Airlines heritage. While these aircraft now wear American Airlines' iconic livery, their history interests aviation enthusiasts.

Frontier is one of America's largest low-cost airlines with over 100 aircraft and has recently ... the brand identity. A new ...

the parent of Frontier Airlines, gets a buy rating, agreeing with the Seeking Alpha quant system today. The greatest weight was given to future macro-level airline travel demand growth in the US.